Professional Gear Set
Repair Service
Riding a bicycle should be a smooth and fun experience. But when your gears start making clicking noises, jumping up and down on their own, or your chain falls off completely, the fun stops right away. Trying to pedal a bike with broken gears is hard work and can actually damage your bike even more. Karachi Repairs offers a mobile service that brings the bike shop directly to your home. We fix loose cables, bent parts, and rusty chains so your bicycle shifts perfectly and rides like it is brand new.
Mobile Bicycle Gear Tuning
Does your bike chain keep falling off every time you try to pedal fast? Do you push the gear shifter on your handlebar, but the gears refuse to change? Over time, the metal cables that control your bicycle's gears get stretched out, dirty, and rusty. When this happens, your bike stops listening to you. Provide us with your home address and tell us a little bit about your bicycle. Our friendly and skilled bike mechanics will come straight to your door. We will clean your chain, adjust the cables, and make sure every gear works smoothly so you can enjoy your ride again.
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Cleaning and Oiling
For A Quiet Ride
Many times, people think their bike gears are completely broken and need to be thrown away, when really, they are just incredibly dirty. As you ride around Karachi, your bike chain picks up dust, sand, and old sticky oil from the road. This forms a thick, black paste that covers the metal gears. When the gears are covered in this dirt, the chain cannot move smoothly. It gets stuck, makes a loud grinding noise, and wears out the expensive metal parts very quickly. Our mechanics know that a clean bike is a fast, quiet bike. Before we turn any screws to adjust the gears, we spend time cleaning the system. We use safe, strong cleaners that melt away the old black grease. Once the metal is shiny and clean again, we add fresh, high-quality bicycle oil. This simple step often makes the bike ride better than it did when it was brand new.
Deep Chain Cleaning: We use special brushes and strong, safe liquids that act like soap for metal. We scrub the chain, the front gears, and the back gears until all the thick, sticky black dirt is gone. This stops the dirt from acting like sandpaper and ruining your bike parts while you pedal.
Adding Fresh Bike Oil: You cannot use normal car oil on a bicycle because it attracts too much dirt. We use special bike chain oil. We put one small drop on every single link of the chain. This soaks inside the metal to keep it running smoothly and quietly, without making a big mess everywhere.
Checking for Worn Out Parts: Sometimes a chain is too old and stretched out to be saved. A stretched chain will start eating the metal teeth on your gears. We use a simple tool to measure the chain. If it is too old and stretched, we will tell you honestly that it is time to replace it before it breaks.
Shimano, SRAM,
And Kids Bike Gears
Not all bicycle gears are the same. A small kid's bike usually has a very simple chain and maybe one or two gears that are easy to look after. However, modern adult mountain bikes and fast road bikes have very complicated gear systems. Brands like Shimano, SRAM, and Campagnolo make advanced gear parts that must be adjusted carefully. These systems can have up to 12 gears on the back wheel alone. If you turn a screw the wrong way on these advanced systems, the bike stops shifting completely.
Our mechanics know how to work on all these different types of gears. Whether you have an old commuter bike that needs a basic chain adjustment, or a brand new, expensive road bike that needs the gears tuned perfectly for a race, we have the skills to handle it. We bring the right tools for every type of bike, so you do not have to worry about us using the wrong wrench and damaging your parts. We keep it simple, safe, and effective.
Clear Pricing Before We Start
Honest Quotes
We always look at your bike's gears before we do anything. We check to see if parts are just loose and need adjusting, or if a part is actually broken and needs to be replaced with a new one. We tell you the clear total price upfront. You do not get any surprise fees when the job is done.
Good Quality Parts
If we need to replace a chain or a cable on your bike, we only use strong, reliable parts. We do not use cheap metal cables that rust after one week. By using good parts and proper bike oil, your gears will stay smooth and last much longer, giving you a safe and easy ride.
Friendly Bike Mechanics
Fixing gears can be confusing, but our mechanics are friendly and easy to talk to. They will happily explain what was wrong with your bike in simple words. They know how to treat your bike with care so it feels just like new when they hand it back to you.
We Bring The Bike Shop
Directly To Your Home
Taking a dirty, greasy bicycle with a broken chain in your clean car to find a repair shop is annoying. Bikes do not fit well in cars, and the chain grease leaves black stains everywhere. Once you find a shop, you usually have to leave the bike there for days. We think getting your bike fixed should be much easier. Our mobile service makes fixing your bike easy and comfortable for you by bringing the shop to your door.
Our mechanic arrives at your house with a large bag full of tools. We bring a special stand to hold the bike up in the air so we can spin the pedals and check the gears easily. We carry new chains, gear cables, and bike oil. We fix the problem right in your garage or driveway. You can relax at home while we take care of all the hard, dirty work, getting your bike ready to ride again on the exact same day.
Why Choose Us For Your Gear Repair
Gears need to be clean and set just right to work well. A bad repair will leave you with a chain that keeps falling off. Here is why our service is the best choice for you.
Correct Adjustments
We do not just guess when turning screws. We pull the cables tight and adjust the small limit screws carefully. This makes sure your chain moves to the next gear quickly and never falls off when you shift hard.
Proper Tools
Trying to fix gears with the wrong tools breaks the small metal parts. We bring the exact special tools needed to align the metal hangers and cut cables cleanly, so your bike parts stay safe and unbroken.
Rust-Free Cables
Old, rusty gear wires make shifting feel very stiff. We pull out the rusty wires and put in brand new, smooth stainless steel cables that resist rust, making your shifters feel light and easy to push.
Deep Cleaning First
A dirty bike will never shift well. Before we adjust anything, we scrub the thick black dirt off your chain and gears. Clean metal moves much smoother, saving your expensive parts from wearing out fast.
Save Your Time
You do not need to drop your bike off at a shop and wait for a week. We come to your house, fix the gears on the spot, and let you get back to riding your bike that very same day.
Clear Prices
Once our mechanic tests the gears to see what is sticking, we tell you exactly how much it will cost to tune it. You agree to the price before we start working. There are no sudden extra charges.
Why Do Gears Break Down?
Gears do not usually break for no reason. Understanding why your gears got stuck helps us fix them properly and stop it from happening again.
Ghost Shifting
This happens when you are riding and the bike suddenly changes gears all by itself without you touching the shifter. This means the metal cable holding the gears is slightly loose and has stretched out from normal use.
The Fix: We pull the cable tight again and twist the small adjuster knob until the chain stays put.
Chain Falling Off
If your chain falls off the gears entirely and gets stuck near the pedals or the back wheel, the limit screws are wrong. These small screws tell the gears when to stop moving. If they are loose, the chain goes too far.
The Fix: We carefully adjust these screws so they act like a safe wall to keep the chain on.
Stiff, Hard Shifters
When it takes a lot of thumb strength to push the shifter, the metal wire inside the plastic tube is rusty or full of dry dirt. The wire gets stuck, making it nearly impossible for you to change gears comfortably.
The Fix: We pull out the rusty wire and put in a fresh, smooth stainless steel cable.
Bent Rear Parts
If your bike falls over onto its right side, it will hit the back gears. This bends the small metal piece holding the gears. When this is bent, the chain cannot line up with the teeth, and it will skip loudly.
The Fix: We use a special long tool to gently bend the metal perfectly straight again.
Loud Squeaking Chain
If your bike sounds like small birds are chirping when you pedal, the chain is completely dry. Metal is rubbing against metal with no oil to protect it. This will wear out your expensive gears very fast.
The Fix: We clean the dry dirt off and apply proper bicycle oil so it runs quietly.
Stretched Old Chains
After riding a bike for a long time, the chain physically stretches out. The holes in the chain no longer fit onto the gear teeth perfectly. A stretched chain will slip right over the gears when you push hard on the pedals.
The Fix: We measure the chain, remove the old worn-out one, and install a brand new chain.
How To Book Our Mobile Repair Service
Fixing your gears is easy with our mobile service. Here are the simple steps our mechanics follow when they come to your house.
From Stuck To Smooth Shifting
You Tell Us The Problem
Tell us if it is a road bike or a mountain bike, and what the gears are doing wrong. Sending a quick photo or video on WhatsApp helps us know exactly what new cables or tools we need to bring.
We Check The Gears
Our mechanic arrives and puts your bike on a stand. We spin the pedals and shift the gears to see where it gets stuck. We check if the metal parts are bent or just very dirty from old oil.
We Give A Clear Price
We explain what needs to be done. We tell you the cost for any new cables and the labor to tune the gears. You get a clear, final price, and we do not start working until you say yes.
Cleaning and Fixing
We clean the thick black dirt off the chain first. If the cables are rusty, we remove them and slide in new smooth ones. If the metal hanger is bent, we carefully pull it straight with our tool.
Tuning and Testing
We pull the new cables tight and turn the small screws. We spin the pedals and shift up and down until every gear clicks perfectly into place. Then we add a drop of fresh oil to keep it quiet.
Warning Signs You Need Help Now
What To Do Before We Arrive
Ready to Fix Your Shifting? Call Karachi Repairs.
Since 2015, we have safely cleaned, adjusted, and repaired thousands of broken bicycle gears for riders across the city. We know exactly how to pull cables tight, straighten bent parts without snapping them, and use the right oil to keep the chain quiet. Good working gears mean you can ride up hills easily, shift without annoying clicking noises, and stop worrying about your chain falling off in the middle of the street.
Call or WhatsApp 0332-6678611, or fill out the form on this page to ask for a mobile mechanic visit. Tell us your location and describe what your bike gears are doing. We will send a fully prepared bike mechanic directly to your house, bringing fresh stainless steel cables, proper bike chain oil, and safe tools to fix your gears quickly and properly right in your driveway.
Gears Tuned Perfectly, Not Just Left Clicking
Do not ignore gears that skip or a chain that falls off. A small clicking noise today turns into a completely jammed chain tomorrow. When a chain gets stuck, it can rip the gears right off the frame, forcing you to buy very expensive new parts. Trying to fix complicated gears yourself by turning random screws usually makes the bike impossible to shift. Adding thick car oil to a dirty chain just turns the dirt into a heavy paste that grinds down the metal teeth fast. The true value of a professional gear tuning service is making sure the whole system is clean and balanced again. We do not just turn a screw and leave. We wash the thick dirt away, install fresh rust-free cables, straighten bent parts with the correct tools, and adjust the tension until the bike shifts perfectly smooth and quiet.
As a specialized part of Karachi Repairs, we know exactly how to handle all kinds of bike gears. From fixing simple city bikes to tuning complex, high-end Shimano or SRAM systems on racing bikes, we do it all carefully without breaking your frame. We save you the big headache of trying to cram a greasy, dirty bicycle into your car. Instead, we bring our friendly service and proper tools directly to your house. Every job is done with care, priced fairly, and finished right in front of you.
If you hear a clicking sound when you pedal, if your chain is falling off, or if the shifter feels stuck, the easiest thing to do is send a quick WhatsApp message. Tell us what kind of bike you have, send a picture of the back gears, and we will send a helpful mechanic to tune it up for you.
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Gear Repair FAQs
The slipping chain, stiff shifter, and mobile tuning questions our Karachi clients ask most often.
Why does my bike change gears on its own?
This is called ghost shifting. It happens when the metal cable stretches out from use. We pull the cable tight and adjust the small knob until the chain stays on the right gear.
Why does the chain keep falling off?
If the chain falls off, the small 'limit screws' on the gears are set wrong. If they are loose, the chain goes too far. We carefully adjust these screws so the chain stays safely on.
Do I need to bring my bike to your shop?
No, you do not have to leave your house. Our repair service is fully mobile. We bring the right tools, new cables, and a bike stand directly to your home and fix the gears there.
Why is the shifter so hard to push?
The metal wire inside the plastic tube is rusty or full of dry dirt. It gets stuck. We pull out the rusty wire and put in a fresh, smooth stainless steel cable so it shifts easily.
Can you fix a bent metal part on the back gears?
Yes. If your bike falls, the small metal hanger bends. We use a special long tool to gently bend the metal perfectly straight again so the chain lines up with the teeth.
Can I use car oil on my squeaky bike chain?
No! Car oil is too sticky. It attracts dirt and sand, turning into a black paste that ruins the metal gears. We clean the chain first and use special, light bicycle oil.
How long does the gear tuning take?
Usually, it takes our mechanic about 30 to 45 minutes to clean the chain, change any rusty cables, and adjust the screws so the bike shifts smoothly again.
What if my chain gets completely jammed?
Stop riding right away. Do not try to pry the chain out with a screwdriver, as you will break the frame. Call us, and we will safely remove the jammed chain using proper tools.
Will you tell me the price before you start?
Always. We look at the bike, see what is rusty or bent, and give you a clear total price for parts and labor. We do not start working until you agree. No hidden charges.
Which areas of Karachi do you cover?
We provide our mobile bicycle repair service in all major areas, including DHA, Clifton, Gulshan-e-Iqbal, PECHS, North Nazimabad, Malir, and Bahria Town.
Areas We Cover
Across Karachi
Our mobile bike mechanics carry heavy-duty repair stands, gear cables, and special tuning tools directly to your location across all major city zones.